参数资料
型号: LTC3419IMS-1#TRPBF
厂商: Linear Technology
文件页数: 6/16页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 0.6A 10MSOP
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.6 V ~ 5.5 V
输入电压: 2.5 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 2.25MHz
电流 - 输出: 600mA
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
供应商设备封装: 10-MSOP
LTC3419
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, V IN = 3.6V, unless otherwise noted.
V OUT
100mV/DIV
AC-COUPLED
I L
500mA/DIV
I LOAD
500mA/DIV
Load Step
V OUT
100mV/DIV
AC-COUPLED
I L
500mA/DIV
I LOAD
500mA/DIV
Load Step
V OUT
100mV/DIV
AC-COUPLED
I L
500mA/DIV
I LOAD
500mA/DIV
Load Step
20μs/DIV
3419 G19
20μs/DIV
3419 G20
20μs/DIV
3419 G21
V IN = 3.6V
V OUT = 1.8V
I LOAD = 0A TO 600mA
PIN FUNCTIONS
(DD/MS)
V IN = 3.6V
V OUT = 1.8V
I LOAD = 40mA TO 600mA
V IN = 3.6V
V OUT = 1.2V
I LOAD = 40mA TO 600mA
V FB1 (Pin 1/Pin 1): Regulator 1 Output Feedback. Receives
the feedback voltage from the external resistive divider
across the regulator 1 output. Nominal voltage for this
pin is 0.6V.
RUN1 (Pin 2/Pin 2): Regulator 1 Enable. Forcing this pin
to V IN enables regulator 1, while forcing it to GND causes
regulator 1 to shut down.
MODE (Pin 3/Pin 3): Mode Select Input. To select pulse-
skipping mode, tie to V IN . Grounding this pin selects Burst
Mode operation. Do not leave this pin ?oating.
SW1 (Pin 4/Pin 4): Regulator 1 Switch Node Connection
to the Inductor. This pin swings from V IN to GND.
V IN (Pin 5/Pin 7): Main Power Supply. Must be closely
de-coupled to GND.
SW2 (Pin 6/Pin 8): Regulator 2 Switch Node Connection
to the Inductor. This pin swings from V IN to GND.
RUN2 (Pin 7/Pin 9): Regulator 2 Enable. Forcing this pin
to V IN enables regulator 2, while forcing it to GND causes
regulator 2 to shut down.
V FB2 (Pin 8/Pin 10): Regulator 2 Output Feedback. Receives
the feedback voltage from the external resistive divider
across the regulator 2 output. Nominal voltage for this
pin is 0.6V.
Exposed Pad (Pin 9/NA): Ground. The Exposed Pad must
be soldered to PCB for optimal thermal performance.
GND (NA/Pins 5, 6): Ground. Connect to the (–) terminal
of C OUT , and the (–) terminal of C IN . Pin 5 of the MS
package must be soldered to the PC board for optimal
thermal performance.
3419fa
6
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